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Commit | Line | Data |
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dd83b06a AF |
1 | /* |
2 | * QEMU CPU model | |
3 | * | |
1590bbcb | 4 | * Copyright (c) 2012-2014 SUSE LINUX Products GmbH |
dd83b06a AF |
5 | * |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see | |
18 | * <http://www.gnu.org/licenses/gpl-2.0.html> | |
19 | */ | |
20 | ||
1ef26b1f | 21 | #include "qemu/osdep.h" |
da34e65c | 22 | #include "qapi/error.h" |
dd83b06a | 23 | #include "qemu-common.h" |
878096ee | 24 | #include "qom/cpu.h" |
b3946626 | 25 | #include "sysemu/hw_accel.h" |
066e9b27 | 26 | #include "qemu/notify.h" |
91b1df8c | 27 | #include "qemu/log.h" |
508127e2 | 28 | #include "exec/log.h" |
9262685b | 29 | #include "qemu/error-report.h" |
066e9b27 | 30 | #include "sysemu/sysemu.h" |
62a48a2a | 31 | #include "hw/qdev-properties.h" |
0ab8ed18 | 32 | #include "trace-root.h" |
066e9b27 | 33 | |
69e5ff06 IM |
34 | bool cpu_exists(int64_t id) |
35 | { | |
38fcbd3f AF |
36 | CPUState *cpu; |
37 | ||
38 | CPU_FOREACH(cpu) { | |
39 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
69e5ff06 | 40 | |
38fcbd3f AF |
41 | if (cc->get_arch_id(cpu) == id) { |
42 | return true; | |
43 | } | |
44 | } | |
45 | return false; | |
69e5ff06 IM |
46 | } |
47 | ||
9262685b AF |
48 | CPUState *cpu_generic_init(const char *typename, const char *cpu_model) |
49 | { | |
50 | char *str, *name, *featurestr; | |
62a48a2a | 51 | CPUState *cpu = NULL; |
9262685b AF |
52 | ObjectClass *oc; |
53 | CPUClass *cc; | |
54 | Error *err = NULL; | |
55 | ||
56 | str = g_strdup(cpu_model); | |
57 | name = strtok(str, ","); | |
58 | ||
59 | oc = cpu_class_by_name(typename, name); | |
60 | if (oc == NULL) { | |
61 | g_free(str); | |
62 | return NULL; | |
63 | } | |
64 | ||
62a48a2a | 65 | cc = CPU_CLASS(oc); |
9262685b | 66 | featurestr = strtok(NULL, ","); |
62a48a2a IM |
67 | /* TODO: all callers of cpu_generic_init() need to be converted to |
68 | * call parse_features() only once, before calling cpu_generic_init(). | |
69 | */ | |
70 | cc->parse_features(object_class_get_name(oc), featurestr, &err); | |
9262685b AF |
71 | g_free(str); |
72 | if (err != NULL) { | |
73 | goto out; | |
74 | } | |
75 | ||
62a48a2a | 76 | cpu = CPU(object_new(object_class_get_name(oc))); |
9262685b AF |
77 | object_property_set_bool(OBJECT(cpu), true, "realized", &err); |
78 | ||
79 | out: | |
80 | if (err != NULL) { | |
565f65d2 | 81 | error_report_err(err); |
9262685b AF |
82 | object_unref(OBJECT(cpu)); |
83 | return NULL; | |
84 | } | |
85 | ||
86 | return cpu; | |
87 | } | |
88 | ||
444d5590 AF |
89 | bool cpu_paging_enabled(const CPUState *cpu) |
90 | { | |
91 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
92 | ||
93 | return cc->get_paging_enabled(cpu); | |
94 | } | |
95 | ||
96 | static bool cpu_common_get_paging_enabled(const CPUState *cpu) | |
97 | { | |
6db297ea | 98 | return false; |
444d5590 AF |
99 | } |
100 | ||
a23bbfda AF |
101 | void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list, |
102 | Error **errp) | |
103 | { | |
104 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
105 | ||
fbe95bfb | 106 | cc->get_memory_mapping(cpu, list, errp); |
a23bbfda AF |
107 | } |
108 | ||
109 | static void cpu_common_get_memory_mapping(CPUState *cpu, | |
110 | MemoryMappingList *list, | |
111 | Error **errp) | |
112 | { | |
113 | error_setg(errp, "Obtaining memory mappings is unsupported on this CPU."); | |
114 | } | |
115 | ||
d8ed887b AF |
116 | void cpu_reset_interrupt(CPUState *cpu, int mask) |
117 | { | |
118 | cpu->interrupt_request &= ~mask; | |
119 | } | |
120 | ||
60a3e17a AF |
121 | void cpu_exit(CPUState *cpu) |
122 | { | |
027d9a7d | 123 | atomic_set(&cpu->exit_request, 1); |
ab096a75 PB |
124 | /* Ensure cpu_exec will see the exit request after TCG has exited. */ |
125 | smp_wmb(); | |
027d9a7d | 126 | atomic_set(&cpu->tcg_exit_req, 1); |
60a3e17a AF |
127 | } |
128 | ||
c72bf468 JF |
129 | int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu, |
130 | void *opaque) | |
131 | { | |
132 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
133 | ||
134 | return (*cc->write_elf32_qemunote)(f, cpu, opaque); | |
135 | } | |
136 | ||
137 | static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f, | |
138 | CPUState *cpu, void *opaque) | |
139 | { | |
b09afd58 | 140 | return 0; |
c72bf468 JF |
141 | } |
142 | ||
143 | int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu, | |
144 | int cpuid, void *opaque) | |
145 | { | |
146 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
147 | ||
148 | return (*cc->write_elf32_note)(f, cpu, cpuid, opaque); | |
149 | } | |
150 | ||
151 | static int cpu_common_write_elf32_note(WriteCoreDumpFunction f, | |
152 | CPUState *cpu, int cpuid, | |
153 | void *opaque) | |
154 | { | |
155 | return -1; | |
156 | } | |
157 | ||
158 | int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu, | |
159 | void *opaque) | |
160 | { | |
161 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
162 | ||
163 | return (*cc->write_elf64_qemunote)(f, cpu, opaque); | |
164 | } | |
165 | ||
166 | static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f, | |
167 | CPUState *cpu, void *opaque) | |
168 | { | |
b09afd58 | 169 | return 0; |
c72bf468 JF |
170 | } |
171 | ||
172 | int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu, | |
173 | int cpuid, void *opaque) | |
174 | { | |
175 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
176 | ||
177 | return (*cc->write_elf64_note)(f, cpu, cpuid, opaque); | |
178 | } | |
179 | ||
180 | static int cpu_common_write_elf64_note(WriteCoreDumpFunction f, | |
181 | CPUState *cpu, int cpuid, | |
182 | void *opaque) | |
183 | { | |
184 | return -1; | |
185 | } | |
186 | ||
187 | ||
5b50e790 AF |
188 | static int cpu_common_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg) |
189 | { | |
190 | return 0; | |
191 | } | |
192 | ||
193 | static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg) | |
194 | { | |
195 | return 0; | |
196 | } | |
197 | ||
568496c0 SF |
198 | static bool cpu_common_debug_check_watchpoint(CPUState *cpu, CPUWatchpoint *wp) |
199 | { | |
200 | /* If no extra check is required, QEMU watchpoint match can be considered | |
201 | * as an architectural match. | |
202 | */ | |
203 | return true; | |
204 | } | |
205 | ||
bf7663c4 GK |
206 | bool target_words_bigendian(void); |
207 | static bool cpu_common_virtio_is_big_endian(CPUState *cpu) | |
208 | { | |
209 | return target_words_bigendian(); | |
210 | } | |
5b50e790 | 211 | |
cffe7b32 | 212 | static void cpu_common_noop(CPUState *cpu) |
86025ee4 PM |
213 | { |
214 | } | |
215 | ||
9585db68 RH |
216 | static bool cpu_common_exec_interrupt(CPUState *cpu, int int_req) |
217 | { | |
218 | return false; | |
219 | } | |
220 | ||
c86f106b AN |
221 | GuestPanicInformation *cpu_get_crash_info(CPUState *cpu) |
222 | { | |
223 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
224 | GuestPanicInformation *res = NULL; | |
225 | ||
226 | if (cc->get_crash_info) { | |
227 | res = cc->get_crash_info(cpu); | |
228 | } | |
229 | return res; | |
230 | } | |
231 | ||
878096ee AF |
232 | void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf, |
233 | int flags) | |
234 | { | |
235 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
236 | ||
237 | if (cc->dump_state) { | |
97577fd4 | 238 | cpu_synchronize_state(cpu); |
878096ee AF |
239 | cc->dump_state(cpu, f, cpu_fprintf, flags); |
240 | } | |
241 | } | |
242 | ||
243 | void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf, | |
244 | int flags) | |
245 | { | |
246 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
247 | ||
248 | if (cc->dump_statistics) { | |
249 | cc->dump_statistics(cpu, f, cpu_fprintf, flags); | |
250 | } | |
251 | } | |
252 | ||
dd83b06a AF |
253 | void cpu_reset(CPUState *cpu) |
254 | { | |
255 | CPUClass *klass = CPU_GET_CLASS(cpu); | |
256 | ||
257 | if (klass->reset != NULL) { | |
258 | (*klass->reset)(cpu); | |
259 | } | |
2cc2d082 LV |
260 | |
261 | trace_guest_cpu_reset(cpu); | |
dd83b06a AF |
262 | } |
263 | ||
264 | static void cpu_common_reset(CPUState *cpu) | |
265 | { | |
91b1df8c | 266 | CPUClass *cc = CPU_GET_CLASS(cpu); |
ce7cf6a9 | 267 | int i; |
91b1df8c AF |
268 | |
269 | if (qemu_loglevel_mask(CPU_LOG_RESET)) { | |
270 | qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index); | |
271 | log_cpu_state(cpu, cc->reset_dump_flags); | |
272 | } | |
273 | ||
259186a7 | 274 | cpu->interrupt_request = 0; |
259186a7 | 275 | cpu->halted = 0; |
93afeade AF |
276 | cpu->mem_io_pc = 0; |
277 | cpu->mem_io_vaddr = 0; | |
efee7340 | 278 | cpu->icount_extra = 0; |
28ecfd7a | 279 | cpu->icount_decr.u32 = 0; |
414b15c9 | 280 | cpu->can_do_io = 1; |
f9d8f667 | 281 | cpu->exception_index = -1; |
bac05aa9 | 282 | cpu->crash_occurred = false; |
ce7cf6a9 | 283 | |
ba7d3d18 AB |
284 | if (tcg_enabled()) { |
285 | for (i = 0; i < TB_JMP_CACHE_SIZE; ++i) { | |
286 | atomic_set(&cpu->tb_jmp_cache[i], NULL); | |
287 | } | |
1f5c00cf AB |
288 | |
289 | #ifdef CONFIG_SOFTMMU | |
ba7d3d18 | 290 | tlb_flush(cpu, 0); |
1f5c00cf | 291 | #endif |
ba7d3d18 | 292 | } |
dd83b06a AF |
293 | } |
294 | ||
8c2e1b00 AF |
295 | static bool cpu_common_has_work(CPUState *cs) |
296 | { | |
297 | return false; | |
298 | } | |
299 | ||
2b8c2754 AF |
300 | ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model) |
301 | { | |
302 | CPUClass *cc = CPU_CLASS(object_class_by_name(typename)); | |
303 | ||
304 | return cc->class_by_name(cpu_model); | |
305 | } | |
306 | ||
307 | static ObjectClass *cpu_common_class_by_name(const char *cpu_model) | |
308 | { | |
309 | return NULL; | |
310 | } | |
311 | ||
62a48a2a | 312 | static void cpu_common_parse_features(const char *typename, char *features, |
1590bbcb AF |
313 | Error **errp) |
314 | { | |
315 | char *featurestr; /* Single "key=value" string being parsed */ | |
316 | char *val; | |
62a48a2a IM |
317 | static bool cpu_globals_initialized; |
318 | ||
319 | /* TODO: all callers of ->parse_features() need to be changed to | |
320 | * call it only once, so we can remove this check (or change it | |
321 | * to assert(!cpu_globals_initialized). | |
322 | * Current callers of ->parse_features() are: | |
62a48a2a | 323 | * - cpu_generic_init() |
62a48a2a IM |
324 | */ |
325 | if (cpu_globals_initialized) { | |
326 | return; | |
327 | } | |
328 | cpu_globals_initialized = true; | |
1590bbcb AF |
329 | |
330 | featurestr = features ? strtok(features, ",") : NULL; | |
331 | ||
332 | while (featurestr) { | |
333 | val = strchr(featurestr, '='); | |
334 | if (val) { | |
62a48a2a | 335 | GlobalProperty *prop = g_new0(typeof(*prop), 1); |
1590bbcb AF |
336 | *val = 0; |
337 | val++; | |
62a48a2a IM |
338 | prop->driver = typename; |
339 | prop->property = g_strdup(featurestr); | |
340 | prop->value = g_strdup(val); | |
341 | prop->errp = &error_fatal; | |
342 | qdev_prop_register_global(prop); | |
1590bbcb AF |
343 | } else { |
344 | error_setg(errp, "Expected key=value format, found %s.", | |
345 | featurestr); | |
346 | return; | |
347 | } | |
348 | featurestr = strtok(NULL, ","); | |
349 | } | |
350 | } | |
351 | ||
4f658099 AF |
352 | static void cpu_common_realizefn(DeviceState *dev, Error **errp) |
353 | { | |
13eed94e IM |
354 | CPUState *cpu = CPU(dev); |
355 | ||
356 | if (dev->hotplugged) { | |
357 | cpu_synchronize_post_init(cpu); | |
6afb4721 | 358 | cpu_resume(cpu); |
13eed94e | 359 | } |
2bfe11c8 LV |
360 | |
361 | /* NOTE: latest generic point where the cpu is fully realized */ | |
362 | trace_init_vcpu(cpu); | |
4f658099 AF |
363 | } |
364 | ||
7bbc124e LV |
365 | static void cpu_common_unrealizefn(DeviceState *dev, Error **errp) |
366 | { | |
367 | CPUState *cpu = CPU(dev); | |
82e95ec8 LV |
368 | /* NOTE: latest generic point before the cpu is fully unrealized */ |
369 | trace_fini_vcpu(cpu); | |
7bbc124e LV |
370 | cpu_exec_unrealizefn(cpu); |
371 | } | |
372 | ||
a0e372f0 AF |
373 | static void cpu_common_initfn(Object *obj) |
374 | { | |
375 | CPUState *cpu = CPU(obj); | |
376 | CPUClass *cc = CPU_GET_CLASS(obj); | |
377 | ||
a07f953e | 378 | cpu->cpu_index = UNASSIGNED_CPU_INDEX; |
35143f01 | 379 | cpu->gdb_num_regs = cpu->gdb_num_g_regs = cc->gdb_num_core_regs; |
fa5376dd MAL |
380 | /* *-user doesn't have configurable SMP topology */ |
381 | /* the default value is changed by qemu_init_vcpu() for softmmu */ | |
382 | cpu->nr_cores = 1; | |
383 | cpu->nr_threads = 1; | |
384 | ||
376692b9 | 385 | qemu_mutex_init(&cpu->work_mutex); |
7c39163e EH |
386 | QTAILQ_INIT(&cpu->breakpoints); |
387 | QTAILQ_INIT(&cpu->watchpoints); | |
b7d48952 DB |
388 | |
389 | cpu->trace_dstate = bitmap_new(trace_get_vcpu_event_count()); | |
39e329e3 LV |
390 | |
391 | cpu_exec_initfn(cpu); | |
a0e372f0 AF |
392 | } |
393 | ||
b7bca733 BR |
394 | static void cpu_common_finalize(Object *obj) |
395 | { | |
b7d48952 | 396 | CPUState *cpu = CPU(obj); |
b7d48952 | 397 | g_free(cpu->trace_dstate); |
b7bca733 BR |
398 | } |
399 | ||
997395d3 IM |
400 | static int64_t cpu_common_get_arch_id(CPUState *cpu) |
401 | { | |
402 | return cpu->cpu_index; | |
403 | } | |
404 | ||
40612000 JB |
405 | static vaddr cpu_adjust_watchpoint_address(CPUState *cpu, vaddr addr, int len) |
406 | { | |
407 | return addr; | |
408 | } | |
409 | ||
dd83b06a AF |
410 | static void cpu_class_init(ObjectClass *klass, void *data) |
411 | { | |
961f8395 | 412 | DeviceClass *dc = DEVICE_CLASS(klass); |
dd83b06a AF |
413 | CPUClass *k = CPU_CLASS(klass); |
414 | ||
2b8c2754 | 415 | k->class_by_name = cpu_common_class_by_name; |
1590bbcb | 416 | k->parse_features = cpu_common_parse_features; |
dd83b06a | 417 | k->reset = cpu_common_reset; |
997395d3 | 418 | k->get_arch_id = cpu_common_get_arch_id; |
8c2e1b00 | 419 | k->has_work = cpu_common_has_work; |
444d5590 | 420 | k->get_paging_enabled = cpu_common_get_paging_enabled; |
a23bbfda | 421 | k->get_memory_mapping = cpu_common_get_memory_mapping; |
c72bf468 JF |
422 | k->write_elf32_qemunote = cpu_common_write_elf32_qemunote; |
423 | k->write_elf32_note = cpu_common_write_elf32_note; | |
424 | k->write_elf64_qemunote = cpu_common_write_elf64_qemunote; | |
425 | k->write_elf64_note = cpu_common_write_elf64_note; | |
5b50e790 AF |
426 | k->gdb_read_register = cpu_common_gdb_read_register; |
427 | k->gdb_write_register = cpu_common_gdb_write_register; | |
bf7663c4 | 428 | k->virtio_is_big_endian = cpu_common_virtio_is_big_endian; |
cffe7b32 | 429 | k->debug_excp_handler = cpu_common_noop; |
568496c0 | 430 | k->debug_check_watchpoint = cpu_common_debug_check_watchpoint; |
cffe7b32 RH |
431 | k->cpu_exec_enter = cpu_common_noop; |
432 | k->cpu_exec_exit = cpu_common_noop; | |
9585db68 | 433 | k->cpu_exec_interrupt = cpu_common_exec_interrupt; |
40612000 | 434 | k->adjust_watchpoint_address = cpu_adjust_watchpoint_address; |
ba31cc72 | 435 | set_bit(DEVICE_CATEGORY_CPU, dc->categories); |
4f658099 | 436 | dc->realize = cpu_common_realizefn; |
7bbc124e | 437 | dc->unrealize = cpu_common_unrealizefn; |
ffa95714 MA |
438 | /* |
439 | * Reason: CPUs still need special care by board code: wiring up | |
440 | * IRQs, adding reset handlers, halting non-first CPUs, ... | |
441 | */ | |
442 | dc->cannot_instantiate_with_device_add_yet = true; | |
dd83b06a AF |
443 | } |
444 | ||
961f8395 | 445 | static const TypeInfo cpu_type_info = { |
dd83b06a | 446 | .name = TYPE_CPU, |
961f8395 | 447 | .parent = TYPE_DEVICE, |
dd83b06a | 448 | .instance_size = sizeof(CPUState), |
a0e372f0 | 449 | .instance_init = cpu_common_initfn, |
b7bca733 | 450 | .instance_finalize = cpu_common_finalize, |
dd83b06a AF |
451 | .abstract = true, |
452 | .class_size = sizeof(CPUClass), | |
453 | .class_init = cpu_class_init, | |
454 | }; | |
455 | ||
456 | static void cpu_register_types(void) | |
457 | { | |
458 | type_register_static(&cpu_type_info); | |
459 | } | |
460 | ||
461 | type_init(cpu_register_types) |